Experiment with microphone sensor and ATTINY

The microphone sensor detect noise activity (5 meters). We can change the amplitude buffer by changing the capacitor value. The mic react by the airwave modulation.

• The sensor could recognize a hand clap ( high amplitude, short time wave)
• The repetitive sound like persone walking hard.

We can add filter (capacitor and resistance(not on photo))to reach specific frequency sound

• Bass sound from truck passing or ghettoblaster !!
• High sound like whisle, child laughing